TTTech automotive-overview

TTTech Automotive
Solutions for Safety, Electric Vehicles and Testing

Company Overview

products@tttech.com

www.tttech-automotive.com Copyright © TTTech Automotive GmbH. All rights reserved.

What do they have in common …
Boeing 787 NASA Orion

… Reliable Networks and Controls from TTTech

Audi A8 Prinoth Leitwolf
www.tttech-automotive.com Copyright © TTTech Automotive GmbH. All rights reserved. Page 2

Company Mission

TTTech establishes time-triggered communication platforms and certifiable
safety modules as the solutions of choice for volume embedded market
segments that need and value reliability and robustness.
Benefits include simple to use complete products, best-in-class
product cost performance and service, and enabling our customers
to deploy their solutions more efficiently and profitably.


Experts for Reliable Networks and Safe Controls

• Founded in 1998
• Award-winning spin-off of Vienna Technical University
• Unique know-how pool of 200+ employees
• Headquartered in Vienna, Austria
• Shareholders
• Founders & employees: ~40%
• AUDI AG: < 25%
• Remaining shares: investors
Gaimersheim Vienna
including aeris Capital AG Germany Austria Seoul
Carlsbad Korea
California Brixen Bukarest
Italy Romania
Yokohama
Japan


TTTech Automotive GmbH
• 100% subsidiary of TTTech Computertechnik AG
• Premium associate member of FlexRay Consortium
• Premium member of AUTOSAR Consortium
• Premium member of JasPar Consortium

Ingolstadt
Stuttgart • Support
• Sales • Engineering

Yokohama
• Sales
Seoul • Engineering
Vienna • Sales • Support
• Headquarters
• Sales
• R&D
• Engineering
• Support


Automotive Production Program Reference Audi A8

Communication Software
• FlexRay, CAN, LIN, Tools
• Performance optimized

Communication Safety Software
• End-to-end safety on FlexRay and CAN
• ISO 26262 ASIL D

Process Optimization
• Automated ECU Validation
• Testbench automation

Premium Engineering
• 10 Mbit/s physical layer
• Stable parameterizing and interoperability
• Software integration and prototype support
• Diagnostics specification
• Representation in FlexRay Consortium

Audi A8, A6, A4, … VW Touareg, … Bentley Arnage, Continental


Automotive Portfolio

Reliable Networks and Safe Communication
Reliable Networks and Safe Communication

Embedded Safety Safety Hardware for Testing Tools
Software E-Vehicles
• Autosar Safe up to ASIL D • Modulare Safety Platform • Data Logger
• SafeCOM • IEC 61508 / ISO 26262 • FlexRay Tools
• SIL 2-3

Networks & Engineering


TTTech Automotive
Safety Hardware and Solutions for Electric Vehicles

• Electric Vehicle Safety Unit
• Electric Vehicle Control Unit
• Modular ECU Family


Solutions for Functional Safety in Electric Vehicles

Modular Hardware Safety Platform
Modular Hardware Safety Platform
ISU
Inverter Safety Unit Inverter

• Safety for electric powertrain
• Add-on or integrated ISU

Electric Vehicle Control Unit … cost effective customized version
• Platform for electric powertrain possible
control strategy VCU

Modular ECU Family HY-TTC 90
• Certified for SIL 2/3 (ASIL C/D) HY-TTC 100 HY-TTC 50
• Off-the-shelf / customizable HY-TTC 200 HY-TTC 60 HY-Vision2
• Flexible configurable I/O
Safety ECUs certified by TÜV Nord Standard ECUs

Modular Software Safety Platform
Modular Software Safety Platform
Application
SafeExecution SafeCOM RTE
CAL
AUTOSAR
SafeCOM COM

• For safety functions up to ASIL D • Safe end-to-end comm. PDU Router

FX TP CAN TP

• Co-existance of safety related and over CAN or FlexRay FlexRay Interface

FlexRay Driver
LIN Interface

LIN Driver
CAN Interface

CAN Driver

non-safety related functions • Up to ASIL D
• Integrates with AUTOSAR SafeExec • Conform to AUTOSAR SafeCOM


Example 1: Electric Vehicle Safety Unit
• Electric vehicles are „by-wire“ (safety-relevant system)
• Unintended acceleration or deceleration to be avoided!
• TTTech‘s ESU is a safe guarding unit to control this
behavior
• Torque supervision by voltage and current measurements,
switch off in case of error
• Retrofit to existing powertrain concepts,
or customized integration with inverter / VCU
• Certified for SIL 2-3)
• Prototypes available now, SOP in Q1/2011 Accelerator Pedal

ESU

Battery Unit Inverter E-Motor


Example 2: Electric Vehicle Control Unit

ECU Platform for Electric Powertrain Control

VCU

Battery Unit Inverter E-Motor

• 16/32 Bit main CPU, supervised by certified watchdog CPU
• ISO 26262 compliant Hardware and Software platform
• Safe software runtime environment (SafeExecution and SafeCOM)
• Accomodates non-safe Basic Software (AUTOSAR, Diagnostics, …)
and non-safe application software modules
• Supports mixed-criticality applications


TTTech Automotive
Embedded Safety Software

• Modular Safety Platform
• Partnership with Vector Informatik
• MICROSAR Safe


ASIL Decomposition

Safety Concept Economic Implementation

Application SW Application SW
(ASIL D) (ASIL D)
ASIL D ASIL D (D) +
QM (D) Safety Layer
(ASIL D) Safety Mechanisms
Basic SW
(ASIL D)
Basic SW Reused Standard SW
(QM)

The safety elements …
• … detect and handle possible faults in the Basic SW
• … are independent elements in the system with specific functionality
(addressing the detection and mitigation of faults in the Basic SW)
• … are developed according to the required ASIL
• … are developed as „Safety Element out of Context“ and have to be
integrated according to their „Safety Manual“


Use Case 1: End-to-End Communication Protection

Safety-Relevant Application
• Trusted input data required
App. 1 App. 2 App. 3 App. 4

E2E E2E

E2E-Lib
Protection Protection
Wrapper Wrapper

Basic Software

• SafeCOM ensuring end-to-end communication protection
• Errors in the conduction can be detected. The application can
react accordingly


Use Case 2: Different ASIL Levels
ASIL-x Application SafeExecution - Safety Layer for:
• Usage of AUTOSAR system services • Timing protection
(QM)
• Memory protection
• Program flow monitoring

SafeSelfCheck
App. 1 App. 2 App. 3 App. • Separation of different ASIL levels
4
SafeMemoryProtection

Checkpoint Checkpoint
„SafeApp1“ „SafeApp2“

SafeWatchdogMgr
Basis Software SafeWatch
Checkpoint dog
„SafeCDD“

SafeIO

Complex
Drivers

• SafeExecution ensuring „Criteria for Coexistence“ of QM SW
• Violation of the “Freedom from Interference” is detected safely


Modular Safety Platform


SafeWatchdogMgr
Safety LayerCheckpoint
Checkpoint
for ECUs
Safety Layer „SafeApp2“
„SafeApp1“ for ECUs SafeWatch
dog

•• Freedom from Interference
Freedom from Interference
E2E Protection
Wrapper
E2E Protection
Wrapper
(incl. Watchdog)
Bootloader

(incl. Watchdog)

E2E-Lib
OS

RTE
•• Communication Protection
Communication Protection

SafeSelfCheck
•• IO Protection
IO Protection Checkpoint
„SafeCDD“

•• HW Integrität
HW Integrität SafeIO

System Memory Comm.
Comm. I/O Complex
Services Services Services Services Drivers

BSP

• Safety Layer(s) for ECUs up to ASIL D
• Mapping for SIL 3 and PL e


Modular Safety Platform


SafeWatchdogMgr
Checkpoint Checkpoint
„SafeApp1“ „SafeApp2“ SafeWatch
dog

E2E Protection E2E Protection
Wrapper Wrapper
Bootloader

E2E-Lib
OS

RTE

SafeSelfCheck
Checkpoint
„SafeCDD“

SafeIO

System Memory Comm.
Comm. I/O Complex
Services Services Services Services Drivers

BSP

Checking/Protection Function Non-Safety Standard SW, System SW

Safety-Relevant Function Non-Critical Application SW


TTTech – Vector Partnership


MICROSAR Safe


TTTech Automotive
Testing Tools - Networks & Engineering

• Testing, Verification and Logging Tools
• FlexRay Test Benches and Validation Tools
• Engineering Offering


Testing, Verification and Logging Tools

TTXConnexion TTXDisturbance Node

Gateway and Manipulation for Reproducable Failure Injection for
FlexRay and CAN FlexRay

TTXOptical Link Datalogger NG

Consistently Data Logging for all
Optical Decoupling for FlexRay Automotive Bus Systems


FlexRay Test Benches and Validation Tools

TTXPower Link TTXUniversal Control Unit

High-Performance Tool for The Modular FlexRay
FlexRay Prototyping Applications Development Board


Engineering Offering

Onsite and Offsite Engineering
Rapid Development
Project Support
Integration of Basic Software
FlexRay Training Network Tests
Communication Validation
Parameter Validation
Physical Layer Validation
Safety Analysis & FMEA
Hazard & Risk Analysis
Functional Safety
Special Know-How in Time-Triggered
Architecture, Safety and Development Processes


TTTech Automotive
Advanced Solutions

• TTXMulti Switch for FlexRay
• Time-Triggered Ethernet as Vehicle Backbone Network


What is a TTXMulti Switch?

The TTXMulti Switch is a zero-delay, non-buffering, time-triggered switch for
multiple parallel FlexRay data streams
• Offers increased FlexRay bandwidth
• Improves system robustness and fault-tolerance
• Can be integrated in 4-fold transceiver chip in central gateway ECU

TTXMulti Switch

FlexRay Network

Central Gateway


What is TTEthernet?

=

Ethernet + Clock + Time-Triggered + Rate-Constrained + Safety
Synch. Communication Communication

• Established • Coordination • Real-time control • Audio/video streaming • ISO26262 ASIL D
• Dominant • Distributed (chassis, engine, • Sensor fusion • IEC 61508 SIL 4
control active & passive
• Standard • ARINC 664, AVB • DO 254 Level A
safety systems)
• IEEE 802.3 • SAE AS6802 • „By-wire“
• Determinism
• IEEE 1588

Integration of all data flows in one single network
• 100% compatible with Ethernet standard IEEE 802.3
• Scales from low to high speed (10 Mbit/s, 100 Mbit/s, 1 Gbit/s, …)
• Scales from simple to safe and high-availability systems


TTEthernet Services

TTEthernet adds Rate-Constrained (Streaming) Services


Time-Triggered Ethernet
Key Features
• 3 concurrent traffic classes: time-triggered / rate-constrained / event-triggered
• Core functionality implemented in TTEthernet switch chip
• Software based nodes can use standard Ethernet controllers
• Fulfills highest safety standards (Aerospace DO254 / DO178B Level A)
• 100 Mbit/s and 1 Gbit/s

Mixed-Criticality & Safety
• Real-time / non-real-time and
critical / non-critical traffic in one network
• Fail-operational support on network level
• Single, dual and triple channel

Standard Support TTEthernet Switch
(Evaluation Box)
• Interoperable with standard IEEE 802.3
• Support for IEEE 1588
• Standardization in progress - SAE AS6802


TTTech automotive-overview

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